Mattress core element



FIG. 1 is a top perspective view of a mattress utilizing the mattress core element, shown in a condition of use.

FIG. 2 is an enlarged partial top perspective view of a mattress with a cover partially opened to show the traditional employment of the mattress core element.

FIG. 3 is a is a top perspective view of the core element.

FIG. 4 is a top view thereof; the bottom plan view is a mirror image thereof.

FIG. 5 is a right side view of the core element; the left side view is a mirror image thereof; and,

FIG. 6 is a front view of the core element; the rear view is a mirror image thereof.

The elements depicted in broken lines are provided to show environmental subject matter only, and form no part of the claimed design. 

CLAIM The ornamental design for a mattress core element, as shown and described. 